1EIG

SOLUTION STRUCTURE OF THE HUMAN CHEMOKINE EOTAXIN-2


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

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This is version 1.4 of the entry. See complete history


Literature

NMR solution structure and receptor peptide binding of the CC chemokine eotaxin-2.

Mayer, K.L.Stone, M.J.

(2000) Biochemistry 39: 8382-8395

  • DOI: https://doi.org/10.1021/bi000523j
  • Primary Citation of Related Structures:  
    1EIG, 1EIH

  • PubMed Abstract: 

    The human CC chemokine eotaxin-2 is a specific agonist for the chemokine receptor CCR3 and may play a role in the recruitment of eosinophils in allergic diseases and parasitic infections. We report the solution structure of eotaxin-2 determined using heteronuclear and triple resonance NMR methods. A family of 20 structures was calculated by hybrid distance geometry-simulated annealing from 854 NOE distance restraints, 48 dihedral angle restraints, and 12 hydrogen bond restraints. The structure of eotaxin-2 (73 amino acid residues) consists of a helical turn (residues 17-20) followed by a 3-stranded antiparallel beta-sheet (residues 22-26, 37-41, and 44-49) and an alpha-helix (residues 54-66). The N-loop (residues 9-16) is packed against both the sheet and the helix with the two conserved disulfide bonds tethering the N-terminal/N-loop region to the beta-sheet. The average backbone and heavy atom rmsd values of the 20 structures (residues 7-66) are 0.52 and 1.13 A, respectively. A linear peptide corresponding to the N-terminal region of CCR3 binds to eotaxin-2, inducing concentration-dependent chemical shift changes or line broadening of many residues. The distribution of these residues suggests that the peptide binds into an extended groove located at the interface between the N-loop and the beta2-beta3 hairpin. The receptor peptide may also interact with the N-terminus of the chemokine and part of the alpha-helix. Comparison of the eotaxin-2 structure with those of related chemokines indicates several structural features that may contribute to receptor specificity.


  • Organizational Affiliation

    Department of Chemistry, Indiana University, Bloomington 47405-0001, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
EOTAXIN-273Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for O00175 (Homo sapiens)
Explore O00175 
Go to UniProtKB:  O00175
PHAROS:  O00175
GTEx:  ENSG00000106178 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO00175
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-12-06
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-16
    Changes: Data collection, Database references, Derived calculations
  • Version 1.4: 2024-11-20
    Changes: Data collection, Structure summary